Provided state

We provide existing quantum state via sub-module qoop.core.state. Here is the summary table:

State	Function name	Description
Greenberger–Horne–Zeilinger	ghz	$|\text{GHZ}\rangle=\frac{1}{\sqrt{2}}(|0\rangle^{\otimes n} + |1\rangle^{\otimes n})$
W	w	$|\text{W}\rangle = \frac{1}{\sqrt{n}} (\sum_{i=0}^{n-1} |i\rangle)$
Absolute Maximally Entangled	ame	$|\text{AME}_3\rangle= 0.27|000\rangle + 0.377|100\rangle + 0.326|010\rangle + 0.363|001\rangle + 0.740e^{-0.79\pi i}|111\rangle$, $|\text{AME}_4\rangle = \frac{1}{\sqrt(6)}(|0010\rangle + w|0101\rangle + w^2|0110\rangle + |1000\rangle)$ where $w=e^{2*\pi i/3}$ |
TFD	tfd	$|\text{TFD}(\beta)\rangle= \frac{1}{\sqrt{Z}}\sum_{j}\exp(\frac{-\beta E_j}{2})|j\rangle_{A}|j\rangle_{B}$